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The bicep performs two actions, to allow the elbow to flex (..
🕑 Added 2021-04-07 16:09:14 +0000 UTC The bicep performs two actions, to allow the elbow to flex (bend) and to allow the wrist to supinate (turn the palm of the hand to face up). Stretching after arm workouts keeps the muscles flexible, strong, and healthy, and we need that flexibility to maintain a range of motion in the joints. Without it, the muscles shorten and become tight. Then, when you call on the muscles for activity, they are weak and unable to extend all the way.
